LOUD Technologies S410s Operating instructions

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S410s REPAIR MANUAL
S410s REPAIR MANUAL

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These instructions are intended to help restore any ailing S410s Passive Subwoofer
back to factory working conditions. They show how to remove and replace the
drivers and input assembly.
Please contact Mackie Technical Support (1-800-898-3211) to receive a Service
Request Number and Order Number for parts needed for this restoration. They will
also help you determine the nature of the problem and what parts will repair the unit.
Tools needed:
• Phillips head screwdriver.
• Solid workbench.
Parts needed:
***NOTE: not all parts listed below will be needed for your repair***
• 10” Woofer (Top Left) Part #0011737 pages 3-4
• 10” Woofer (Top Right) Part #0011737 pages 5-6
• 10” Woofer (Bottom Left) Part #0011737 pages 7-8
• 10” Woofer (Bottom Right) Part #0011737 pages 9-10
• Input Assembly Part #0011817 pages 11-12
Safety Warnings:
• Make sure that you disconnect all cords before you begin these procedures.
• Always use safety glasses!
• Please try NOT to touch any of the pcb circuitry, capacitors, resistors, etc.
• Take care to read and follow these instructions. It may help to read the
instructions prior to the repair to get an idea of what it entails.

3
Top left woofer replacement:
1
1Six screws need to be removed from each side of the front of the grill (twelve
screws total) using the phillips head
screwdriver. This grill has a tendency to
want to pop off, so please be sure to
hold it in place with one hand or arm
while removing the screws with your
free hand. In addition to the grill, the
screws also hold the decorative trim. The
trim should be removed, too. Keep the
twelve screws in a safe place.
2
2Eight screws need to be removed from the woofer using the phillips head
screwdriver. Once the screws are
removed, the woofer may be loosened
by prying a flat head screwdriver in
between the cabinet and the woofer.
The eight screws should be kept in a safe
place.
8
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
9
9
10
10
11
11
12
12
1
1
2
2
3
3
4
4
5
5
6
6
7
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8
8

4
3
3Carefully begin to remove the woofer.
Caution: The woofer is approximately
8 pounds with the weight unevenly
distributed.
Top left woofer replacement continued:
4
4The positive (blue and black) and negative (solid black) cables are still
attached to the woofer terminals.
Remove the cables from their terminals
simply by pushing down on the terminal
and pulling out the cable.
5
5The picture above shows what the S410s looks like with the grill and top left woofer
removed. Place the new woofer (part
#0011737) where the old one was. Follow
the same steps as above, but backwards
4 to 1. Power up the S410s and the
new woofer should now be pumping
out glorious lows. Awesome, you just
replaced a 10” woofer!
+
+
-
-
push down
push down

5
Top right woofer replacement:
1
1Six screws need to be removed from each side of the front of the grill (twelve
screws total) using the phillips head
screwdriver. This grill has a tendency to
want to pop off, so please be sure to
hold it in place with one hand or arm
while removing the screws with your
free hand. In addition to the grill, the
screws also hold the decorative trim. The
trim should be removed, too. Keep the
twelve screws in a safe place.
8
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
9
9
10
10
11
11
12
12
2
2Eight screws need to be removed from the woofer using the phillips head
screwdriver. Once the screws are
removed, the woofer may be loosened
by prying a flat head screwdriver in
between the cabinet and the woofer.
The eight screws should be kept in a safe
place.
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8

6
3
3Carefully begin to remove the woofer.
Caution: The woofer is approximately
8 pounds with the weight unevenly
distributed.
Top right woofer replacement continued:
4
4The positive (blue and black) and negative (solid black) cables are still
attached to the woofer terminals.
Remove the cables from their terminals
simply by pushing down on the terminal
and pulling out the cable.
+
+
-
-
push down
push down
5
5The picture above shows what the S410s looks like with the grill and top right
woofer removed. Place the new woofer
(part #0011737) where the old one was.
Follow the same steps as above, but
backwards 4 to 1. Power up the S410s
and the new woofer should now be
pumping out glorious lows. Awesome,
you just replaced a 10” woofer!

7
Bottom left woofer replacement:
1
1Six screws need to be removed from each side of the front of the grill (twelve
screws total) using the phillips head
screwdriver. This grill has a tendency to
want to pop off, so please be sure to
hold it in place with one hand or arm
while removing the screws with your
free hand. In addition to the grill, the
screws also hold the decorative trim. The
trim should be removed, too. Keep the
twelve screws in a safe place.
8
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
9
9
10
10
11
11
12
12
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
2
2Eight screws need to be removed from the woofer using the phillips head
screwdriver. This woofer has a tendency
to want to pop out, so please be sure to
hold the woofer in place with your free
hand while removing the screws with the
other hand. The eight screws should be
kept in a safe place.

8
3
3Carefully begin to remove the woofer.
Caution: The woofer is approximately
8 pounds with the weight unevenly
distributed.
Bottom left woofer replacement continued:
4
4The positive (blue and black) and
negative (solid black) cables are still
attached to the woofer terminals.
Remove the cables from their terminals
simply by pushing down on the terminal
and pulling out the cable.
+
+
-
-
push down
push down
5
5The picture above shows what the S410s looks like with the grill and bottom left
woofer removed. Place the new woofer
(part #0011737) where the old one was.
Follow the same steps as above, but
backwards 4 to 1. Power up the S410s
and the new woofer should now be
pumping out glorious lows. Awesome,
you just replaced a 10” woofer!

9
Bottom right woofer replacement:
1
1Six screws need to be removed from each side of the front of the grill (twelve
screws total) using the phillips head
screwdriver. This grill has a tendency to
want to pop off, so please be sure to
hold it in place with one hand or arm
while removing the screws with your
free hand. In addition to the grill, the
screws also hold the decorative trim. The
trim should be removed, too. Keep the
twelve screws in a safe place.
8
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
9
9
10
10
11
11
12
12
2
2Eight screws need to be removed from the woofer using the phillips head
screwdriver. This woofer has a tendency
to want to pop out, so please be sure to
hold the woofer in place with your free
hand while removing the screws with the
other hand. The eight screws should be
kept in a safe place.
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8

10
3
3Carefully begin to remove the woofer.
Caution: The woofer is approximately
8 pounds with the weight unevenly
distributed.
Bottom right woofer replacement continued:
4
4The positive (blue and black) and
negative (solid black) cables are still
attached to the woofer terminals.
Remove the cables from their terminals
simply by pushing down on the terminal
and pulling out the cable.
+
+
-
-
push down
push down
5
5The picture above shows what the S410s looks like with the grill and bottom right
woofer removed. Place the new woofer
(part #0011737) where the old one was.
Follow the same steps as above, but
backwards 4 to 1. Power up the S410s
and the new woofer should now be
pumping out glorious lows. Awesome,
you just replaced a 10” woofer!

11
Input assembly replacement:
1
1Eight screws need to be removed from the input assembly (located on the
rear of the cabinet) using the phillips
head screwdriver. Once the screws
are removed, the input assembly may
be loosened by prying a flat head
screwdriver in between it and the
cabinet. Keep the eight screws in a safe
place.
2
2Once loosened, the input assembly may be easily removed from the cabinet. Do
not completely take the input assembly
off yet, as two cables need to be
removed first.
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8

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3
3Two cables need to be removed from the input assembly PCB (as shown on the
left): (1) the solid black cable attaches
to the negative terminal (connection J4).
This is for the input jack, and (2) the grey
and black cable attaches to the positive
terminal (connection J3). This is for the
thru jack. Do not force cable removal
or connection, although needle-nose
pliers may aid in loosening the crimped
cables.
Input assembly replacement continued:
Pull out
Pull out
1
1
2
2
J4
J4
-
-
Input
Input
J3
J3
+
+
Thru
Thru
2
2
1
1
J4
J4
-
-
Input
Input
J3
J3
+
+
Thru
Thru
1
1
2
2
J4
J4
-
-
Input
Input
J3
J3
+
+
Thru
Thru
Pull out
Pull out
4
4Place the new input assembly (part #0011817) where the old one was. Follow
the same steps as above, but backwards
3 to 1. Remove the serial number from
the faulty input assembly (as shown
in the picture above) and place on
the new input assembly. Power up the
S410s and relish in the fact that you just
replaced an input assembly. Hats off to
you for a job well done!

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